Oem device



Aug. 25,- 1925. v

1 V A. E. CARLSON OILING DEVICE Filed July 2. 1924 6 7 v FEE Y J I-CE v IN VEN TOR: AnZ/wngElarlsQn BY 7 ATTORNEY.

Patented Au 25, 1925.

UNITED STATES,PATENT-OFFICE.

I ANTHONY El or LosaNenLns, mama.

' Application "filed 111172,

To all whomit may concern:

Be it known that I, An'rrroNvE. cm-

I sort, a citizefnof the United States, residing 1 speci cation. j

at Los Angeles, in thecounty of Los Angeles' and State of California, have invented certain new and useful Improvements in Oilin Devices, of which the following is a M invention relatesto an oili ngdevice, particularly useful forbiling the bearings of 'the. rotary cutters of deep well rotary drills,

' and the I v character stated w ich will belustrated in the accompanying drawings.

of a rotary eneral object of my invention is to provi e a sim le oiling device of the positive and highly .eflicient in operation;

Other ob'ects and advantages will be made maniest in the following specification for an embodiment of the invention il- Referring to the drawing Figurel 1s a verticallongitudinal section deep well drill-equipment with oiling device.

Figure 21s afhori zontal section of said J drill taken on line 2-2 of Figure 1.

Figure? 3 is a typical vertical sectional view taken on line 3-,3 of Figure '1'. v

My device is shown in the drawlng as applied to a'rotary deep well drill, come-Q prisingthe usualdrill pipe 1, a drlllhead 2' screw seated in the lower end of said pipe,

rotaryputters 3 journaled in bearings in said head; and a water p petsleadmg through the drill p1pe-andscrew seated at lower endi inn the upper end 'of said'head "asfindicated 'at';6"in communication with a e port 7 leading axially throu the head.-

I 0i1;, ducts. 85am provide the head '2 ileadin from the" u cutter earings voted in the; lower end of t;

pdr'tndfthreoi to the e upper ends of which by wei hted valves 9 I, e drillpi 1 "pivots 1 0 jand 11 'journaled in said r ll;

4 t duct s ,are' controlled pipe and fines e-man e: .15 respective y.

1924. serial in. may.

11 to' permit the valve to swin rearwardly during the rotation of the dri 1 so that the closure face will be raised above the u per and of the oil duct 8 to open said end 0 the not. A head 15 is fitted in thelower port/ion of the drill pipelabove the valves 9, the water pipe extending through said head,,

thus formin an ollrese'rvoir' 16 in] the lower portion of t e drill pipe betweenvsaid head and .the drill head 2. An oil inlet 17 is pro vided in the head through which inlet oil is introduced into'the reservoir 16, the:

inletbeing normally closed plug 18.

An air inlet 19 is provided in the head 15 to admit air under pressure into the top, of the reservoir 16 abovethe oil 20 therein, said by a screw 'inlet being controlled-by a check valve 21 I which opens 'undernpressure to admitfair into the reservoir but closesto prevent the escape of air therefromf:

An e11 inlet opening which inlet is normally closed-by a screw 23. Anoil drain, outlet 24 is provided in! the drill pipe 1 below the inlet 22 at a predetermined level through which oil in the top of the reservoir 16 may be drained down to said level, above which level the reservoir' islilled witha definite volume of air under apredetermined pressure. Said outlet 24 is normally closed by a screw plug 25. A drain outlet 26 is also provided in the lower end' of the drill' 'p'ipe 1 leading" f om the bottom st the weighted When the. drill is at parts 13 ofthe-va1ves-9 hold the valves uprightwith 'the closure faces 12 over the up per ends of the ducts 8, closing said ducts so, thatnooil ,from the reservoir may es'-' cape through the ducts 8. ,Upon rotation of'the drillthe' valves 9-swing rearwardly,

the faces" 14 permittin such movement, so that the faces 12- rise a ove the upper ends ofthe-ducts 8 and open said ducts whereupon oil flows from the reservoir throu h and 22 is alsoprovided 1n the drill pipe'Ijust below the head'15 f'the reservoir. which out et is normally closed by a screw plug 27.

ducts to the cutter bearings 4, thus lu ricatin said 1 he journal30 of each cutter 3 is,pro-' vided/with a longitudinal groove 31 through which oilu-runs from v.the'upperbearing 4, with which the oil duct 8 communicate's, into the lower bearing 4.

the reservoir to the drill cutter bearings,

valves for controlling said oil ducts, pivoted in the lower portion of said reservoir,

closure faceson said valves, the valvesfbe= ing-weighted so that the hold said closure faces over the upper en s"of' said oil ducts ,when the drill is at rest, but permit the valves to swing on their pivots so that said 15 closure faces will rise above the ends of said ducts and gopen the same when the drill is rotated.

thus described my invention 2. An oiling device for rotary drills comprising an oil reservoir in the lower portion of the drill pipe, the drill head being provided with o l ducts'leading from the reservoir to the drill cutter bearings, and valves for closing said 'ductswhen, the drill is at rest and for opening said ducts when the drill is rotated, means for admitting air under pressure into the top of the reservoir,

and a drain outlet in the upper portion of the reservoir to drain the oil from the reservoir to a predetermined level above which level air under pressure is admitted into the reservoir. 7

In testimony whereof I afiix my signature.

ANTHONY E. CARLSON. 

